<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
<script>
    let aa = parseInt(prompt("请输入1-7的数组"))
    switch (aa){
        case 1: console.log("星期一")
        break;
        case 2: console.log("星期二")
        break;
        case 3: console.log("星期三")
        break;
        case 4: console.log("星期四")
        break;
        case 5: console.log("星期五")
        break;
        case 6: console.log("星期六")
        break;
        case 7: console.log("星期日")
        break;
    }

</script>
</html>